PERTRONIC INDUSTRIES LTD
VESDA
®
PSU
Installation Note
PERTRONIC INDUSTRIES LTD
0520-VESDA PSU Operating Instruction Issue 9, 200804
Battery
Load
If Peak Load Current is >2.5 Amp
move the Load termination
from DC OUT to BATTERY terminals
Mains
O’Load
Auto
Test
Fault
Mounting:
The power supply is designed as a wall mounting unit and should be mounted in a clean dry
area in such a way that natural convection between the unit and the wall and through all other
cooling slots is not restricted in any way.
Connectors:
Mains (K1):
a 3-terminal block with an integral three-pole switch for Mains wiring.
Battery (K2):
a 2-terminal block for Battery wiring.
DC OUT (K3):
a 2-terminal block to connect the load – use only if peak load current is less
than 1A.
Care should be taken to prevent reverse polarity connections between the power supply and
load.
Fault Relay (K5):
provides clean C-NC-NO contacts rated 1A @ 24Vdc.
Commissioning:
It is recommended that the power supply initially be connected to the Mains without the load
connected. The green
Mains On
LED should be ON. The load should then be connected to the
power supply and run without the batteries connected. The red
Overload
LED should remain
OFF. If the red overload LED turns ON, the load is too great for the power supply. If this is so,
the batteries will recharge very slowly or not at all. With the load connected, connect the two 12V
batteries to the power supply—take care to observe the correct polarity.
Press the RESET switch for 1 second. The
Autotest
LED turns ON, indicating the 24-Hour Test
has started. Check for any Fault conditions, and press RESET momentarily to reset the
Autotest
and the
Autotest
Timer. Future Auto Tests will occur 23 hours after the reset.
Installation Diagram:
